Part 3 > MIDI channel 3 > Out 3, and so on until Part 8 > MIDI channel 8 > Out 8

4. Open the Mixer and identify your main track then click on the + sign as many times as you need multi-outputs to create Aux tracks - 7 in this example to finally get 8 faders dedicated to UVI Workstation Multi-outputs (1 main + 7 aux).

Note that Logic will automatically set separate outputs of UVI Workstation to Aux tracks as follow: